Improvement in polishing- wheels



t five.'

ADDISON M. SAWYEa'oF ATHoL, MASSACHUSETTS.

Letters .Patent No. 85,538,- dated Janna/ry 5, 1869; antedated December l26, 1868.

IMPROVEMNT `IN'PoLIstnma-Wmmns.

' The Schedule referred to fn these Letters Patent and making part of the salme.

To all whom 'it tmay concern Be it known that I, ADDISON M. SAWYER, of Athol, in the county of Worcester, and State of Massachusetts, have invented a new Mode of Forming a Band or Surface for Bung or Polishing; 'and I do hereby declare that the following is'a full, clear, and exact description of the same, taken in connection with the accompanying drawings, making a part of this specication, in which- Figure 1 is a side elevation of a buiiingwheel, with a part in section, and

Figure 2- is an edge view of the same, half in section. The subject-matter of my invention relates to a new mode of forming a band or surface for buing, as it is called, for putting a high polish upon metals and other substances, and consists in forming the same of a layer or band of soft vulcanized rubber, to the outer surface of which is attached a covering, of buff' leather or other suitable material, for holding the polishing-powder, and tothe other surface of which is attached a strip of cloth, or other material which is practically inelastic in the direction of its length, to prevent the stretching of the rubber, toe whole being united so as to form a permanent structure.

This, article is designed more especially to be used for covering polishing-wheels, and the method in which it is made is as follows:

required; or it may be vulcanized without a mould,

and afterwards placed upon a revolving mandrel or wheel that will nt it, and the outer surface ground oli truly, upon the outside, to the shape required.

This surface is then covered with rubber cement, and allowed to dry until it is slightly sticky. A strip of bu leather, so called, or other material-:suitable tohold the polishing-powder, of the proper length and width, is prepared, by coating the back side with rubber cement in the same manner as before described with the rubber band. 'lhe strip is then laid with its cemented side upo'nfthe rubber, and pressed on to it in all parts, which causes it to adhere rmly.

After some further drying of the cement, the band is fit for use. [In applying it to a wheel, or other implement, it is Secured thereto by glue, or other adhesive material, which will adhere to the canvas and the surface ofthe implement. If it is not used upon a wheel or other implement, the canvas may be dispensedwith, although I deem it preferable to use it.

In the drawings-4 A is"`the wheel;

B, the canvas;

` G, the rubber cushion; and

D, the buff-leather covering.

' I do not herein claim the use of a canvas liningvto the rubbcrband, to counteract its elasticity, as that is the subjectof claim in another application for'Letters Patent; but

What `I claim, and desire to secure, is-

A polishing-surface composed bf a cushion or'band of soft vulcanized rubber, covered with bufi` leather, or other material that will hold the .polishing-powder, substantially as described.

EXecuted,`May22, 1868.

' l A. M. SAWYER. Witnesses:

F. F. FAY,

H. A. FAY. 

